25139834 has 8 divisors (see below), whose sum is σ = 37920960. Its totient is φ = 12499516.

The previous prime is 25139833. The next prime is 25139837. The reversal of 25139834 is 43893152.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×25139834² = 1264022507095112, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 25139794 and 25139803.

It is not an unprimeable number, because it can be changed into a prime (25139833) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 34754 + ... + 35469.

It is an arithmetic number, because the mean of its divisors is an integer number (4740120).

Almost surely, 2^25139834 is an apocalyptic number.

25139834 is a deficient number, since it is larger than the sum of its proper divisors (12781126).

25139834 is a wasteful number, since it uses less digits than its factorization.

25139834 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70404.

The product of its digits is 25920, while the sum is 35.

The square root of 25139834 is about 5013.9639009470. The cubic root of 25139834 is about 292.9459299869.

The spelling of 25139834 in words is "twenty-five million, one hundred thirty-nine thousand, eight hundred thirty-four".